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6880723 
Journal Article 
Solution Properties of Poly(Methyl Methacrylate) in Dimethylsulfoxide 
Moyses, S; , 
2008 
Yes 
International Journal of Polymer Analysis & Characterization
ISSN: 1023-666X 
TAYLOR & FRANCIS LTD 
ABINGDON 
413-427 
WOS:000261671500002 
The solution properties of polymethylmethacrylate in dimethylsulfoxide were studied using multi-angle light scattering and an online viscometer coupled to size exclusion chromatography. The data demonstrate that DMSO is a suitable eluent for the determination of the molecular weight of PMMA by SEC. The Mark-Houwink coefficients K and were determined as a function of temperature. At 35C, DMSO is a theta solvent for PMMA, and it becomes a good solvent as the temperature increases. The unperturbed dimension K was calculated using three different procedures. The data do not show evidence of a conformational transition controlled by the temperature such as the one reported in benzene and confirm the existence of a general relationship between the ratio K/K and . In the case of PMMA, the comparison of the dipole moment of the side group to that of the solvent can be used to predict the existence of a conformational transition.